Using microG EN as library

I am attempting to use microG as a library for the SwissCovid app as has been suggested by @mar-v-in.

My apologies in advance if I am doing something silly, just starting up with microG…

What I have done so far is remove the dependencies on GMS in my project, put the relevant modules in (play-services-core etc.), implement provideDiagnosisKeys() in the client lib, and minor fixes until the app compiles. Now the app starts running, but as soon as it tries to start EN (sending com.google.android.gms.nearby.exposurenotification.START Intent), it fails to bind in MultiConnectionKeeper.this.context.bindService() (returns false), eventually returning API_UNAVAILABLE to the app. I have tried to change GMS_PACKAGE_NAME to org.microg.gms or the app package, with no success.

From logcat:

2020-09-17 15:14:18.645 4340-5972/? W/ActivityManager: Unable to start service Intent { act=com.google.android.gms.nearby.exposurenotification.START pkg=org.microg.gms } U=0: not found

My questions are:

• Any hints on what I should be changing to make it work?
• Can the app as such even run on a phone with Google GMS installed (which is what I am testing on right now)? Should I rename all com.google.android.gms to avoid conflicts?
• Am I missing something to enable microG, some sort of init()?

Thank you in advance for any help!

[cgrigis]

A version of SwissCovid using microG as a library is now available on F-Droid. Thank you @Bubu and @fynngodau for your help!

[Bubu]

@cgrigis

https://codeberg.org/corona-contact-tracing-germany/cwa-android/src/branch/main/fdroidrepo/metadata/de.corona.tracing.yml + https://codeberg.org/corona-contact-tracing-germany/cwa-android/src/branch/main/metadata

feel free to ask any questions that come up.